[K12OSN] how to stop icewmbkg and icewmtray from loading...and more CPU issues

[David Trask]

Ok...

I've been testing my server some more....again...it's a dual Xeon 2.x ghz
with 4 gb RAM....  By using TeacherTool I'm able to simultaneously launch
an app in my lab to a bunch of logged in machines.  I set 19 machines
logged in with generic accounts like test1, test2...etc.  I selected all
19 and ran "oowriter"......took 90 seconds for all 19 of them to load and
be ready.  Not too bad, but while I was doing that I'd run  gkrellm 
and/or vmstat and found the CPU usage would nearly max out (high 90's
percetage-wise) while launching the program.  In fact, it was that way
when launching almost ANY program.  The CPU usage would spike to the 90's
and then calm down once the program was loaded.  Network usage is fine....
 I launched a whole bunch of programs on all 19 of them (one on top of the
other...so all were running simultaneously ....aka multi-tasking)....Dia,
Abiword, KTouch, OOwriter, Gnumeric, Kword, Gftp, Firefox, Epiphany....and
I never even approached going to swap!  I had all these programs (at
least) open at once on all 19 machines....no memeory issues at all.  When
running "top" I found "icewmbkg" and "icewmtray" running on all
workstations.  Although they didn't use much CPU time....I found them for
the most part unnecessary....since I killed both of them using killall and
I noticed nothing different...except that I got some CPU time back. 
Although it didn't seem to help my "launch time" CPU usage (still in the
mid to high 90's)  Given this....

Question 1:  How can I keep "icewmbkg" and "icewmtray" from starting (is
it in the icewm prefs file?)

Question 2:  Any thoughts on how to address my CPU usage issue when
programs start up?  I used to notice that once a program was in "cache"
then it started very quickly the second time....I'm not seeing that with
this new system....K12LSP 4.1   is there something I can tweak or turn on?

David N. Trask
Technology Teacher/Coordinator
Vassalboro Community School
dtrask at vcs.u52.k12.me.us
(207)923-3100